RVP 6535*335 Series, Quick Reference Manual

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11
PRINTED CIRCUIT BOARD COMPRESSOR SECTION
COMPRESSOR #1 COOLING OPERATION
1. Begins with a call from the thermostat, 12 volt positive (+) to terminal #5 (Y1) in the 9-pin connector. (Yellow wire at the
thermostat). This call is subject to thermostat time delays. The Ground (12 VDC-) is Blue in terminal #4.
2. 12 VDC passes through the circuit board to terminals T3B and T2, Comp 1 Coil. (Subject to 115 VAC power through the
Circuit 1 Exclusion Relay and the Freeze Switch).
3. 12 VDC exits terminals T3B and T2, Comp 1 Coil and goes to the Compressor #1 relay coil.
4. The Compressor Relay #1 closes.
5. Compressor #1 starts and runs until the compressor signal is satisfied at the thermostat. (What else might shut the compressor
off?)
COMPRESSOR #2 COOLING OPERATION
1. Begins with a call from the thermostat, 12 volt positive (+) to terminal #6 (Y2) in the 9-pin connector. (Orange wire at the
Thermostat). Subject to a 2-degree temperature differential and a thermostat time delay. The Ground (12 VDC-) is Blue in
terminal #4.
2. 12 VDC passes through the circuit board to terminals T3A and T10, Comp 2 Coil.
3. 12 VDC exits terminals T3A (12 VDC-) and T10, (12 VDC+) Comp 2 Coil.
4. The compressor relay #2 closes. (Subject to available 115 VAC power).
5. Compressor #2 starts and runs until the compressor #2 signal is satisfied at the thermostat.